I'm looking at supposedly a "real" 1973 RS/Z28. I posted a picture online and it was pointed out to me that this 73 does not have the longer crash bar from core support to the fenders and does not have the diagonal ones in front of the core support. These were mandated in 1973 for 5mph crash reasons. The current elderly owner swears up and down that this is an original RS car that he bought from the original owner, and that it had the original RS nose on it when he bought it. The car has new front fenders on it and I started to wonder if maybe the long bars were missing because the 73 fenders with the long bar holes may not be repopped since they would be one year only. That doesn't however explain why the diagonal ones in front of the core support are missing unless that's a fittment issue too. Is it correct to say that EVERY 1973 RS/Z28 has these longer crash bars and diagonal ones in front of the core support, NO EXCEPTION? It's still possible that his restorer may have changed a few things during the build. The car had the Norwalk VIN which could make it a Z28 and also has the silver rings in the tail lights as an RS should. I'm told that there's no other way to authenticate a real RS without the build sheet. I'm sure that the build sheet is missing since the car was rotisserie restored 2 years ago and was apart. It's still a great car regardless, but not knowing for sure could effect its value in later years. I've even looked at some "numbers matching" cars on the net that don't have the long bars. That could just go to those that say there are a lot of fakes out there. Any advice!